Home / 3,761.78-5,186.44-2,580.80

Finding the Fourth Proportional to 3,761.78, 5,186.44 and 2,580.80

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Solution

The fourth proportional to 3,761.78, 5,186.44 and 2,580.80 is: 3,558.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,761.78 : 5,186.44 = 2,580.80 : x
  2. Step 2: Convert to fraction form
    3,761.78/5,186.44 = 2,580.80/x
  3. Step 3: Cross multiply
    3,761.78x = 5,186.44 × 2,580.80
  4. Step 4: Simplify right side
    3,761.78x = 13,385,164.35
  5. Step 5: Solve for x
    x = 13,385,164.35/3,761.78
  6. Step 6: Final answer
    x = 3,558.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.